Basics
A desktop computer is an independent personal computer that is too large to carry easily or set up quickly. It is designed to remain in the same place.
The term is used mainly to distinguish this type of personal computer from portable computers and laptops, but also to distinguish other types of computers like the PDA, server or mainframe.
Desktops are currently the cheapest and most common computers, and are frequently used by businesses, schools, households and other organizations.
Nearly all modern desktop computers are modular, meaning that the components can easily be replaced or upgraded.
A desktop computer can also refer to a computer who'se case is oriented horizontally (usually, the monitor is placed on top of the case). Such cases are called Desktops as opposed to Towers.
Hardware
The hardware in a desktop computer is modular, making it easy for someone with intermediate knowledge of a computer to modify one.
Desktop computers have a separate monitor and case. User-input peripherals such as keyboards, mice are attatched to the case, as well as other peripherals such as printers. Most of the functionality is contained within the case, but some components can be either either external or internal (such as various storage devices or modems). The case is often placed on or under the desk. Sometimes, it can be placed underneath the monitor.
Desktop computers are generally cheaper than notebook computers. This is because no extra effort is needed to miniaturize the components, or manufacture components that use up less power. However, desktop computers do use up more power than notebook computers.
See also
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